Leading Centers, according to Total Enrollment numbers, are:

• UTHealth - Memorial Hermann Hospital
• University of Washington - Harborview Medical Center
• University of Maryland - R Adams Cowley Shock Trauma Center
• Loma Linda Medical Center
• ASST Grande Ospedale Metropolitano NIGUARDA, Italy

• Baylor College of Medicine - Ben Taub Medical Center
• University of Colorado - UCHealth
• Baylor Scott & White Health
• UT Health Science Center (Memphis)
• UT Health San Antonio

• Denver Health and Hospital Authority
• Cooper University Hospital
• Medical Center of the Rockies
• Dell Seton Medical Center at The University of Texas
• Riverside University Healthcare System

• Mayo Rochester
• Broward Health
• Medical College of Wisconsin
• UMASS Memorial Health Care
• LAC+USC Medical Center

• Hospital Universitario Valle de Hebrón
• Via Christi Regional Medical Center
• University of Alabama at Birmingham
• St. Louis University
• Sant'Orsola Hospital, Italy

• Methodist Dallas Medical Center
• Örebro University Hospital, Sweden
• Emory University at Grady Memorial Hospital
• UC San Diego Medical Center
• Hospital Clinic de Barcelona, Spain

• London Health Sciences Centre, Canada
• UC Davis
• Miami Valley Hospital
• Washington University School of Medicine/Barnes-Jewish Hospital
• Kirov Military Medical Academy, Russia

• SUNY Upstate Medical University
• St. Michael's Hospital, Canada
• LSUHSC/University Medical Center in New Orleans
• University Hospital of Trieste, Italy
• Memorial Regional Hospital

• University of Chicago
• Ascension St. Vincent Hospital
• University of Missouri
• Albany Medical College
• Fondazione IRCCS Policlinico Milan, Italy

• Massachusetts General Hospital
• Cedars Sinai Medical Center
• Beth Israel Deaconess Medical Center
• Maimonides Medical Center